what the hell is a nug i keep hearin people say it but i dunno what it means. im good on most other words its just this one i got trouble with.
1 Improper use of contact lenses or steroid eyedrops can lead to fungal infections, which in turn can cause corneal ulcers. Also, a corneal injury that results in plant material getting into the eye can lead to fungal keratitis.  Acanthamoeba are microscopic, single-celled amoeba that can cause human infection.
If your doctor suspects that bacteria are the cause of your corneal ulcer, usually treatment includes frequent application of topical antibiotics, with or without initial cultures. The location and size of the ulceration will guide your eye doctor in determining the need for cultures.ost cases of corneal ulcer are due to a bacterial infection that invades the cornea  often following eye injury, trauma or other damage. A corneal ulcer can result from an infection following damage from an eye injury or irritation from an ill-fitting or dirty contact lens.